A.Roger wilco
B.Romeo，romeo，romeo
C.SOS acknowledged
D.Mayday roger
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A.A continuous sounding with any fog signal apparatus
B.A signal sent by radiotelephone consisting of the spoken word Mayday
C.An International Code Signal of N.C
D.The firing of green star rockets or shells
A.a distinctive signal
B.the Morse Code signal for SOS
C.a computerized voice announcement of Mayday
D.your vessel's International Radio Call Sign
A.Control bleeding
B.Reduce pain
C.Immobilize a fracture
D.Reset the bone
A.An amount equal to the depth of the water
B.Two times the depth of water
C.Three to four times the depth of water
D.Five to seven times the depth of water
A.Carbon disulfide
B.Ethyl alcohol
C.Isoprene
D.Oleum
最新試題
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word（）.
What are symptom(s) of a ruptured appendix?（）
What happens to the efficiency of an anchor when it is moved from sand to mud?（）
The best method to stop a vessel from dragging anchor in a sand bottom is to（）.
What form of ice is of land origin?（）
There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.
To predict the actual depth of water using the Tide Tables，the number obtained from the Tide Tables is（）.
What is required to launch a boat stowed in a crescent davit?（）
There is plenty of（）at this area.
The vessel was drifted off from her（）due to strong wind.